[Sorption of humic acids by bacteria].

Capacity for sorption of humic acid (HA) from water solutions was shown for 38 bacterial strains. Isotherms of HA sorption were determined for the cells of 10 strains. The bonding strength between the cells and HA (k) and the terminal adsorption (Q(max)) determined from the Langmuir equation for gram-positive and gram-negative bacteria were reliably different.

[Earthworms as modifiers of the structure and biological activity of humic acids].

Passage of humic acids (HAs) through the digestive tract of the earthworm, Eiseniafetida andrei, resulted in a decrease in molecular masses of the HAs. The effect of earthworm-modified HAs on individual bacteria and on bacterial communities as a whole is different from the effect of native HAs. Modified HA probably induces and regulates microbial successions in soils and composts in a different manner than the native HA, suppressing or stimulating different groups of microorganisms.

[Role of high-dose BEAM-chemotherapy and autologous hemopoietic stem cell transplantation in the treatment of drug-resistant Hodgkin disease].

In 1995-1999, 67 patients with relapsed Hodgkin's disease or refractory to chemotherapy (group A--first relapse, B--primary refractory disease, and C--repeated relapse) received cytoreductive (dexaBEAM, DHAP) therapy followed by high-dose BEAM chemotherapy and autologous bone marrow or blood cell transplantation. Early postoperative transplant-related mortality rate was 4.5%.